Axially shifting type, fluid pressure operated tire remover and applier



Aug. 15, 1950 J. B. COMPTON 2,519,114

AXIALLY SHIFTING TYPE, FLUID PRESSURE oPERATED TIRE REMovER AND APPLIER .Filed June l0, 1946 4 Sheets-Sheet l A tio rneyx Aug. `l 5, 1950 J. B. COMPTON 2,519,114 -AxIALLY-sH1E'r1NG TYPE, FLUID PRESSURE OPERATED TIRE REMOVER AND APPLIER Filed June 10, 1946 v4 Sheets-Sheet 2 I I nz'entor A tio rneys Aug. l5, 1950 l J. B. coMPToN 2,519,114 1 AxIALLY SRIETING TYPE, FLUID PRESSURE oRERATED TIRE REMovER AND APRLIER Filed June 10. 1946 4 Sheets-Sheet 3 Aug.l 1s, 195o Filed June l0, 1946 J. B. COMPTON AXIALLY SHIFTING TYPE, FLUID PRESSURE OPERATED TIRE REMOVER AND APPLIER 4 Sheets-Sheet 4 I u Vel/lm' Patented Aug. 15,1950 'p AXIALLY SHIFTING TYPE, PRESSURE OPERATED TIRE REMOVER AND APPLIER Y Joseph B. Compton, Jacksonville, Fla., assignor of one-half to Grace A. Jones, Jacksonville, Fla.

ApplicaticnJune 10, 1946, Serial No. 675,739

This invention relates to a machine for use in removing pneumatic tires from and applying tires to a wheel or rim and has for its primary object tov provide a power actuated machine which will operate quickly and efficiently for applying and removing a tire and thereby eliminate the time consuming manual labor customarily required to accomplish these operations.

More particularly, it is an aim of the invention 'to provide a readily adjustable machine capable of use for applying and removing tires of various sizes to and from their wheels or rims which isA capable of being actuated by pneumatic or hydraulic means for performing the operation.

Other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawings, whichv illustrate a preferred embodiment thereof, and wherein:

Figure 1 is a side elevational view of the machine;

Figure 2 is an enlarged side elevational View partly in vertical section thereof; 1

Figure 3 is a fragmentary vertical sectional view on an enlarged scale and partly in vertical section and showing the ram retracted, preparatory to applying a tire to a rim;

Figure 4 is an enlarged side elevational view of the lower portion of the machine and with the parts in a raised position;

`Figures 5 and 6 are horizontal sectional views taken substantially along planes as indicated by thelines 5-5 and 6 6, respectively, of Figure 4;

j Figure 7 is a vertical sectional view taken substantially along a plane as indicated by the lineT-l of Figure 5;

'Figure 8 is an enlarged longitudinal sectional view taken substantially along a plane as indicated by the line 8-8 of Figure 1, and

Figure 9 is an enlarged fragmentary sectional viewY of a portion of the machine as shown in Figure 3.

upwardly therefrom and the- 'ends' of which are secured thereto by fastenings I3. The frame 'I2 is preferably formed of angle iron.

An elongated cylinder I4 is mounted in an upright position on the intermediate portion of the frame I2 and `is fastened thereto by a bracket 4 Claims. (Cl. 157-1.2)

, piston rod 22.

I5, as seen in Figure 8. The cylinder I4 is provided with a removable head I6 at its upper end having depending lugs I'I which are fastened to the cylinder and which form a stop for limiting the upward movement of a piston I8, which is reciprocally disposed within the cylinder I4. As seen in Figure 8, the lugs I1 extend to below the level of a pipe I9 at the point where it communicateswith the interior of the upper end of the cylinder I4. The cylinder I4 is provided with stops 20 adjacent its lower end which are disposed above the level of the point of communication of a pipe 2I with the interior of the cylinder I4, for a purpose which will hereinafter be described. The piston I8 is provided with a connecting rod 22 which extends downwardly therefrom through aligned openings in the bottom wall of the cylinder I4 and in the intermediate portion of the arch I2, as seen in Figure 8. A sealing gasket 23 and a sleeve '24 is preferably provided for the connecting rod 22 to work through to afford a connection which is substantially leakproof.

A table 25 is supported above the base Il by a pedestal 26 having a base 21 which rests on the base II and which is: providedwith depending teats 28 which fit into recesses 29 of the base II for correctly positioning table 25 thereabove, as

best seen in Figure 3. The table 25 is provided lwith a plurality of upstanding lugs 3B for a purpose which will hereinafter be described.

A frusto-conical guide 3I is disposed above the table 25 and with the enlarged end thereof adjacent to said table.

ported in the upper restricted portion thereof by radial arms 33. A screw 34 is provided with anA vlower portion ofthe bolt 34 and which is disposed in alignment with the sleeve 32.

A ram, designatedgenerally 38 includes a supporting ring 39 which is provided with a diametrically disposed rod 453, the intermediate portionV of which is connected to the lower end of the A pair of guide rods 4I are reciprocally mounted in flanged openings 42 of the intermediate portion'of the arch I2 and are provided With eyes 43 at their lower ends which engage diametrically opposed portions of the ring The guide 3| is providedL A with an axially disposed sleeve 32 which is sup- 39. The guide rods 4I are provided with detachable collars 44 at their upper ends and which are disposed above the intermediate portion of the arch I2 to limit the downward movement of said guide rods, and consequently, the downward movement of the ram 38.

The ram 38 includes a split sleeve 45 formed of four corresponding elongated sections 4B each of which is arcuate-shaped in cross section. The sections 46 are provided with hangers 41 at their upper ends which turnably engage the ring 39 for supporting the strips 45 in depending relationship thereto. The side edges of the sleeve sec-Y tions or strips 46 are provided with outturned longitudinal flanges 48 which are disposed in spaced Vapart relationship to the iianges of vadjacent sections 46. The adiacently Ydisposed ilanges 48 are yieldably connected by contractile springs 49, adjacent the lower end of the sleeve 45 which act to contract the lower end of said sleeve. The sleeve 'sections '45 vare each provided with an 'outturned lower end forming fa angefor shoulder yi). The'end'sfof the flanges or shoulders 50 `combine to form longitudinally extending -ga'psA 51 between the sleeve sections e5 and in which the springs 49 are disposed. Asbest seen in Figure 17, certain Yof the flanges A48 are provided with openings 52 adjacent their lower ends to receive nut and bolt fastenings 53. The AShanks of the fastenings 53 extend through the openings f52'and .headed ends of .sa-id fastenings are Adisposed in the gaps 5i'. A hook 54A `is Vpi-vota-lly mounted at its shank end onfea'ch vof the fastenings 53 and with its shank end-disposed in vagap 151 Aas clearly illustrated in Figure 7. Each of the .fastenings 53 carries `an expansion spring 55 which acts to frictionaily clamp .the shank end of' 4the :hook 54 between the headed end of its fastening 5-3 and the iiange 45 in. 1which said fastening is disposed, for Vmaintaining the hooks V`54 inany position .in which they are placed. As seen in Figure 4:, 'the hook-s '5'4 are mounted .so that the .hook-shaped free end-s thereof project inwardly whenY the Shanks of the hooks are independin-g positions.

rihe:conduits i9 and .-24 are adapted tor-be -connected @to ya suitable source of compressed a-i-r, not shown, or may be connected to a suitable source of hydraulic fluid under pressure, fand 'are provided wi-th Aconventional val-ve means, not shown, whereby when the compressed air is vbei-ng yadmitted .through one of the pipes I.9`-or Z'I, the other pipe willbe exposed to the atmosphere for bleeding @if the air therethrough.

With the foregoingl :in view, and assumingy that it is desired to remove fa pneumatic tire -f-rom its rim Aor wheel, the lever 35 is turned Ato d-isengage the bolt 3e from the threaded bore 31,. Compressed air is admitted -to the lower end of the cylinder i4, suciently to raise the piston I8 a short distance and'at-the same time, the air 'above the piston is bled from the vupper part loi the cylinder i4 through the 'other pipe I9. This upward movement ef the piston I8 wil-l Icause the ram 38 to rise relatively tothe table 25 .and as the springs #39 are yieldably retaining the lower portion of the vram -38 in frictional engagement with the guide 3i, said guide will also be raised.

When the ram V33 with the guide 3l supported therebys thus raised, a pneumatic tire 56 mou-nted `en .a :rim or wheel 5.1, as seen in dotted lines in Figures l and 2, can be placed on the table 25. The lugs 3Q will engage the rim or wheel 51 to properly center the .parts 56Y and 51 with respect to the table 25. Suicient compressed air is then admitted to the upper end of the cylinder I4 through the conduit I9 and a similar amount of compressed air is released through the conduit 2I from the lower end of the cylinder I4, to permit the piston I8 to move downwardly to lower the ram 38 and guide 3! until the enlarged, lower end of the guide :3l is in engagement with the rim 51. The bolt 34 is'then engaged with the threaded bore 31 and tightened to securely retain the lower enlarged end of the frusto-conical `guide 3.! in engagement with the rim 51. It is noted that the external diameter of the enlarged end of the guide 3l is substantially equal to the external diameter of 'the rim 51. Consequently, by admitting additional compressed air to the upper end `of the cylinder I4, the ram 38 will be caused to move downwardly relatively to the frusto-conical guide 3l and the sections 46 of the ram 38 will be swung outwardly at their lower ends on :the pivot 41 .as-said'lower ends ride over the frusto-eonical `guide 31 and toward its fenlarged lower end. During lthis operation, the hooks 54 are in raised position, as illustrated in Figures l and 2. The guide I3! will cause the shoulders 55 to clear the rim V51' as said shoulders move beyond the lower -end ofV the guide Si. Therefore, the shoulders 55 will lengage the upper side wall of the tire 56 and by further movement ofthe ram A33 in a downward direction, will force the tire -doumwardly and `oil Aof the rim :or wheel 51 and thereby cause the tire to drop onto the base IVI.

If the tire beads are struck to the rim flanges, after the ram has moved downwardly :sufficiently to break the upper tire bead from the upper vrim iiange, compressed air is admitted to the lower end of th'J cylinder I4 to elevate the ram v:iti-and thereafter the bolt 34' is disengaged from the bore 31 and the ram 38 and guide 3l as a `unit is thereafter :elevated relatively to 'the table 25, as previously described. The wheel and tire are then inverted .and the operation lof Aexerting `a downward force -on the upper -side of lthe tire is then `repeated and continued until the tirev is forced completely oir 'of the wheelior rim 51.

Hooks 54 are then swung downwardly and inwardly to engage under the 'ta-ble 25 Vand by =applying air pressure to vtheV underside of the piston I8, the ran-l 38,guide 3'I and table'fZS can vbe raised, as seen in Figure 4, so that the tire 55 can be removed f-or whatever repair 'work may ybe required to the tire or tube. The piston I8 is then caused to move downwardly to return the parts to the position as see-n 'in Figure .2, arf-ter which the hooks 54 are swung upwardly todisenga-ge the table 2'5 which is thus again positioned with the tea-ts 2'8 thereof engaging in the recesses 29 for properly locating the Ytable 25 'beneath the guide 1i-I and ram 38.

The screw 34 can then be Vdisengaged 'from the bore 31, andthe ram 38 and guide 31 can then be raised, as previously described, to remove the rim or wheel--51 so that yanother wheel or rim and tire may be applied thereto.;

For applying the ti-re 55 to the rim 5-1, the rim istplaced on'the table225 .in the same manne-r, as previously described,l after which the ram 38 and guide 3i are moveddownwardly to cause the enlarged end -of the guide -3 I to engage the Vrim 51, las illustrated in Figure A3, after which the bolt l34 -is engaged with thev threaded r4bore 31 and tightened to secure the lower :end of the guide 34 tight against thefrim 51. The piston I8 is then .caused to move upwardly and inse moving the .ram .3B

will be carried upwardly relatively to the guide 3|. The ram 38 is moved to a point above the guide 3|,.as seen in Figure 3, so that the tire 56 can be inserted between the guide 3| and ram 38 and positioned on the guide 3|. Compressed air is then admitted to the upper end of the cylinder I4 to force the piston |8 downwardly, so that the ram 38 will move downwardly and over the guide 3| to cause the shoulders 5|] thereof to move into engagement with the upper side wall of the tire 56. Further movement of the ram 3B in a downward direction will force the tire 56 downwardly on the guide 3| and off of the enlarged lower end thereof and into the channel of the rim or wheel 51 to thus reapply the tire 56 to the rim or wheel 51. As the external diameter of the lower end of the guide 3| is equal to the external diameter of the flanges of the rim or wheel 51, the tire 5B will pass readily over the upper rim 'or wheel flange and contract readily into the rim channel.

During this operation as during the operation of removing the tire from the rim, the hooks 54 will be in their raised position as illustrated in Figures 1, 2 and 3.

Various modifications and changes are contemplated and may obviously be resorted to without departing from the spirit and scope of the invention as hereinafter defined by the appended claims.

I claim:

1. In a tire applier and remover, a frame having a base portion and an arch portion, a table removably supported by said base portion and adapted to support a rim or wheel and tire, a frusto-conical guide disposed above and detachably connected to said table and with its enlarged and disposed adjacent thereto, a sleeve-like ram reciprocally disposed in said frame for movement toward and away from the table, said ram being movable over said guide and being provided with expansible means to permit expansion of the ram by engagement with the guide, and actuating means for raising and lowering said ram, said actuating means being operable to move said ram downwardly, guided by said guide, into engagement with the tire for forcing the tire downwardly and off of the rim.

2. A tire remover and applier as in claim 1, and hooks carried by the ram rand swingable into engagement with the table for raising the table when the ram is elevated to permit removal of the tire from the frame and beneath said table.

3. A tire applier and remover as in claim 1, said ram comprising a plurality of arcuate sections hingedly supported at their upper ends and having depending side edges disposed in spaced relationship, contractile spring means connected to said depending side edges for urging the lower ends of the sections inwardly, and said sections having outturned lower ends forming shoulders adapted to bear against a side wall of the tire.

4. In a machine lfor applying or removing pneumatic tires from their wheels or rims, a platform adapted to support a Wheel or rim, a frusto-conical guide disposed above said platform and with its enlarged end adjacent thereto, fastening means for detachably connecting said guide to the platform and for moving the enlarged end of the guide into engagement with the rim or wheel, said guide being adapted to have a pneumatic tire positioned thereover, and a ram reciprocally mounted for movement toward and away from the platform and guide and over said guide, said ram including an expansible sleeve disposed for telescoping engagement with the guide and movable thereon for engaging and forcing the tire downwardly on the guide and off of the guide and onto the rim or wheel.

JOSEPH B. COMPTON.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS 

